Automatic document feeder



FIG. 1 is a perspective view of an automatic document feeder showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for an automatic document feeder, as shown and described. 